The generalized recursive interpolation (GRINT) algorithm was recently proposed and shown, to be the most effective progressive technique for decorrelation of still images. A nonlinear version of GRINT (MRINT) employs median filtering in a nonseparable fashion on a quincunx grid. The main advantage of both these schemes is that interpolation is performed from all error-free valves, thereby reducing the variance of interpolation errors. MRINT is embedded in a simplified version of the context-based encoder by Said & Pearlman (s&P). Coding performances of the novel context-based coder (C-MRINT) are evaluated by comparisons with GRINT, and a variety of other multiresolution lossless methods, including the original scheme by S&P. The modified scheme outperforms all the other algorithms, including the latter, especially when dealing with medical images.
Lossless image compression based on recursive nonlinear interpolation / Aiazzi, B; Alparone, L.; Baronti, S.; Lotti, F.. - STAMPA. - 3164:(1997), pp. 413-418. (Intervento presentato al convegno Applications of Digital Image Processing XX tenutosi a San Diego, CA nel 30 July - 1 August 1997) [10.1117/12.292767].
Lossless image compression based on recursive nonlinear interpolation
ALPARONE, LUCIANO;
1997
Abstract
The generalized recursive interpolation (GRINT) algorithm was recently proposed and shown, to be the most effective progressive technique for decorrelation of still images. A nonlinear version of GRINT (MRINT) employs median filtering in a nonseparable fashion on a quincunx grid. The main advantage of both these schemes is that interpolation is performed from all error-free valves, thereby reducing the variance of interpolation errors. MRINT is embedded in a simplified version of the context-based encoder by Said & Pearlman (s&P). Coding performances of the novel context-based coder (C-MRINT) are evaluated by comparisons with GRINT, and a variety of other multiresolution lossless methods, including the original scheme by S&P. The modified scheme outperforms all the other algorithms, including the latter, especially when dealing with medical images.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.